48 results about "Traffic noise" patented technology

The invention discloses an intelligent low-altitude traffic unmanned aerial vehicle situation awareness method and system. The method comprises the steps of image acquisition, perception enhancement border crossing sample generation, boundary distance analysis feature extraction unit design, dynamic cross-specification air situation fusion, airspace anti-change loss calibration, unmanned aerial vehicle situation awareness model design and low-altitude traffic unmanned aerial vehicle situation awareness. The invention belongs to the field of image processing, and particularly relates to an intelligent low-altitude traffic unmanned aerial vehicle situation awareness method and system.According to the scheme, texture constraint loss is constructed, and situation misjudgment caused by detail loss is reduced; based on boundary distance analysis operation, separating low-altitude traffic noise and target features; based on height attitude self-adaptive pooling size design, feature mismatching is avoided; introducing a motion speed compensation factor to correct frame offset caused by high-speed flight of the low-altitude unmanned aerial vehicle; a dynamic noise suppression coefficient is introduced to suppress harmful gradient interference; and the low-altitude traffic unmanned aerial vehicle situation awareness effect is further improved.

The utility model discloses a limiting device for track noise detection, which relates to the technical field of track traffic noise detection and comprises a square mounting frame. The two mounting plates are symmetrically arranged on the mounting frame, and the two mounting plates are connected with the mounting frame in a sliding and locking mode; two first limiting mechanisms; two clamping jaw parts; and two second limiting mechanisms. According to the utility model, firstly, the detected track is supported by the second limiting mechanism to ensure that the detected track is in a horizontal detection position, and then the detected track is limited and fixed by the first limiting mechanism and the clamping jaw part, so that the connection condition between the clamping jaw part and the detected track can be observed; whether the detected track is flat and qualified or not is preliminarily observed, and then levelness detection is conducted on the detected track through flatness detection equipment. The purpose of detecting the flatness of the surface of the track is achieved.

The utility model relates to the technical field of soundproof windows, in particular to a multilayer soundproof structure of a hollow soundproof shielding window, which comprises a frame, an outer glass plate, a middle glass plate and an inner glass plate are sequentially arranged in the frame from back to front, and a first hollow cavity is arranged between the outer glass plate and the middle glass plate. A second hollow cavity is formed between the middle glass plate and the inner glass plate, the opposite side faces of the outer glass plate and the inner glass plate are each provided with a flexible damping coating, and the front side and the rear side of the middle glass plate are each provided with a flexible damping coating. According to the multi-layer sound insulation structure of the hollow sound insulation shielding window, by means of the design that the multi-layer glass plate structure, the flexible damping coating and the hollow cavity are filled with inert gas, noise can be effectively blocked, the full-band sound insulation effect is achieved, and especially for low-frequency roars in traffic noise and medium-high-frequency sharp noise generated by industrial equipment, the sound insulation effect is good. The remarkable shielding capability is provided, and the requirement of modern buildings for high sound insulation performance is met.

The present application relates to sound insulation equipment technical field, more specifically, it relates to a kind of full-closed sound barrier based on building energy-saving sound insulation material board, comprising: building energy-saving sound insulation material board, door type steel frame structure and self-starting smoke outlet structure;Building energy-saving sound insulation material board is equipped with multiple, multiple building energy-saving sound insulation material board is respectively installed in the side and top of door type steel frame structure;Self-starting smoke outlet structure is closed and installed in the normally closed smoke outlet of door type steel frame structure;When the fire occurs in the full-closed sound barrier and produces a lot of smoke, self-starting smoke outlet structure removes the plugging of normally closed smoke outlet.The present application uses building energy-saving sound insulation material board and door type steel frame structure to cooperate as enclosure structure, effectively reduce traffic noise;Self-starting smoke outlet structure is also installed, effectively ensure the use safety under emergency state.

The invention discloses an indoor noise active control method in an urban traffic environment based on a Wiener algorithm and a related device, and relates to the technical field of indoor noise control, and the method comprises the steps: collecting a plurality of groups of indoor steady-state noise data mainly containing traffic noise through a reference microphone and an error microphone; relying on the steady-state characteristic of the noise, adopting a Wiener algorithm to carry out offline solving to obtain an optimal filter parameter; and finally, taking the optimal parameter as a filter parameter of an indoor noise controller, and applying the optimal parameter to an active control system to reduce the noise of an area to be subjected to noise reduction. According to the scheme, the problem that conventional hardware is difficult to update coefficients in real time in a 1-3ms low-delay scene of adaptive algorithms such as FxLMS and the like is effectively solved, and adaptation can be realized without upgrading the hardware; according to the method, the overall noise reduction of 2-2.5 dB (A) can be realized in the frequency band of 50-1000 Hz, the noise reduction amount of a peak frequency point exceeds 10 dB (A), parameters are adaptive to noise in different time periods, the generalization is good, and the indoor traffic noise control requirement is practically met.

The utility model discloses a partition backdrop glass sound insulation plate which comprises a sound insulation plate assembly. The sound insulation board assembly comprises a sound insulation board outer frame, a sound insulation board inner frame arranged on the inner side of the sound insulation board outer frame, a sound insulation glass plate arranged on the inner side of the sound insulation board inner frame, an electrochromic material layer covering the interior of the sound insulation glass plate, an electric wire led into the sound insulation board outer frame and a round hole formed in the bottom face of the sound insulation board outer frame. The electric male connector is connected to the tail end of the electric wire, and the electric female connector is arranged on the inner frame of the sound insulation plate. Through the arrangement of the sound insulation plate assembly, the glass sound insulation plate and the electrochromism are combined, the color of the electrochromism material layer can be changed by adjusting voltage, and therefore the color change of the sound insulation plate is controlled externally, urban landscape can be changed, and a comfortable visual environment can be provided for pedestrians; and the sound insulation effect can be achieved, and the influence of traffic noise on surrounding residents is effectively reduced.

The invention relates to the technical field of building boards, in particular to a sound absorption and decoration integrated board. The sound transmission surface layer, the sound absorption layer and the resonance noise reduction layer are sequentially bonded from outside to inside, the sound transmission surface layer is a microporous aluminum plate, and the resonance noise reduction layer is a honeycomb core material. The multi-stage composite sound absorption device is reasonable in structural design, adopts a mode of combining sound transmission, sound absorption and resonance to form a multi-stage composite sound absorption system so as to effectively destroy noise propagation, can use noise with different wavelengths, effectively avoids noise such as wind noise, mechanical noise, traffic noise and high-altitude noise, guarantees indoor quietness, and is suitable for popularization and application. The noise eliminating effect is really achieved, and the problems existing in the prior art are solved.

A method for fine-grained traffic noise prediction includes obtaining location data indicating one or more locations and, for each respective location of the one or more locations, location-specific traffic data. The method includes, for each respective location of the one or more locations, using various computational models to predict a vehicle count and a vehicle class mix for the respective location; calculating, based on the predicted vehicle count and the predicted vehicle class mix, a number of vehicles per vehicle class for the respective location; and calculating, based on the number of vehicles per vehicle class, a predicted noise level for the respective location. The method includes causing a client device to display a map. The map may include, for each location of the one or more locations, a visual indication of the predicted noise level for the respective location.

The invention discloses a multilevel active wave interference noise reduction optimization method and system for an expressway. The method comprises the steps that an acoustic sensor collects and preprocesses space-time sequence acoustic data; encoding and fusing the time sequence characteristics and the space characteristics of the double-flow Transform encoder; calculating and generating an active wave interference control signal, and distributing the active wave interference control signal to an active wave interference device; collecting noise reduction effect feedback data, and optimizing parameters by using a snake vulture optimization algorithm; the optimized parameter closed loop is applied to noise reduction control, and continuous self-adaptive optimization is achieved. According to the invention, efficient self-adaptive active noise reduction and continuous optimization control of multi-level and wide-frequency-band traffic noise of the expressway are realized.

The utility model provides a near-rail double-sided super-structure sound-absorbing barrier, which comprises a super-structure sound-absorbing module, a shell and a base, the shell and the base are used for packaging the super-structure sound-absorbing module, and the super-structure sound-absorbing module comprises one or more super-structure sound-absorbing low-frequency modules and one or more super-structure sound-absorbing high-frequency modules. The super-structure sound absorption module is of a multi-Helmholtz resonance sound absorption structure, has a double-face sound absorption function and can efficiently absorb noise on the two sides of the track at the same time. Compared with a traditional sound barrier, the sound barrier can limit wheeltrack noise at the bottom of a train, absorbs and dissipates the noise through the super-structure sound absorption material, and especially for wheeltrack noise generated by a far-rail train, compared with a traditional sound barrier arranged at a bridge curtain board, the sound barrier cannot limit the wheeltrack noise to be diffused outwards; the noise reduction effect is remarkably improved through the near-rail sound barrier arranged between the double lines, the acoustic environment around the rail is effectively improved, and an innovative solution is provided for reducing the influence of traffic noise on the surrounding environment.

The application discloses a sound source sound intensity estimation method, device and equipment and a computer readable storage medium. The method comprises the following steps: positioning the angle of a vehicle sound source relative to a microphone array based on sound signals collected by the microphone array and video data collected by a camera device; calculating the distance between the vehicle sound source and the microphone array according to the angle of the vehicle sound source relative to the microphone array and the installation position information of the microphone array; and calculating the sound intensity data at the vehicle sound source according to the distance and the intensity data of the sound signals of the vehicle sound source collected by the microphone array. The application improves the accuracy of the estimated noise intensity of the vehicle sound source, thereby improving the monitoring and management accuracy of traffic noise.

The application discloses a road traffic noise crowd influence measurement method based on mobile phone signaling data, and the method comprises the following steps: acquiring mobile phone signaling data, determining the space-time distribution information of mobile phone signaling users, estimating the actual population space-time distribution according to the space-time distribution information of mobile phone signaling users and local population census data, calculating the residence time of users staying at each base station position according to the population age attribute in the mobile phone signaling data and the population activity characteristics in the actual population space-time distribution, and then determining a target data set; combining the hourly traffic noise map of the city to obtain the hourly traffic noise equivalent sound level of the coverage range of each base station, and calculating the road traffic noise continuous exposure intensity of the target crowd according to the target data set and the traffic noise equivalent sound level. The application has high accuracy and can be widely applied to the field of computer technology.

The present application relates to sound insulation equipment technical field, more specifically, it relates to a kind of full-closed sound barrier based on building energy-saving sound insulation material board, comprising: building energy-saving sound insulation material board, door type steel frame structure and self-starting smoke outlet structure;Building energy-saving sound insulation material board is equipped with multiple, multiple building energy-saving sound insulation material board is respectively installed in the side and top of door type steel frame structure;Self-starting smoke outlet structure is closed and installed in the normally closed smoke outlet of door type steel frame structure;When the fire occurs in the full-closed sound barrier and produces a lot of smoke, self-starting smoke outlet structure removes the plugging of normally closed smoke outlet.The present application uses building energy-saving sound insulation material board and door type steel frame structure as a containment structure, effectively reduces traffic noise;Self-starting smoke outlet structure is also installed, effectively ensures the use safety under emergency state.

The invention discloses a DAS-based building attachment state monitoring and falling object early warning method and system, and relates to the technical field of building safety monitoring, and the method comprises the steps: collecting a global acoustic vibration signal of a building attachment through employing a laid distributed acoustic sensing optical fiber; the global acoustic vibration signals are separated into different modal components, after the modal components corresponding to the environmental noise are removed, the modal components corresponding to the traffic noise and the personnel activity noise are superposed to serve as reference signals, and after the reference signals are filtered through adaptive weights, defect characteristic signals of the building attachments are determined; and judging whether the defect characteristic signal is a suspected defect event based on a modal frequency change rate and a short-time pulse characteristic, if so, extracting a multi-dimensional characteristic parameter, determining a defect level according to the trained evaluation model, and positioning a defect position according to an optical fiber laying scheme. Therefore, attachment global non-blind area monitoring is realized, and the comprehensiveness, accuracy and timeliness of building safety monitoring are improved.

The utility model discloses a portable highway traffic noise monitoring device, which comprises a vertical cylinder and a lifting rod, the lifting rod is inserted into the top surface of the vertical cylinder in a penetrating manner, a piston is fixedly mounted on the bottom surface of the lifting rod, and a top box is fixedly mounted on the top surface of the lifting rod. The device has the beneficial effects that the pedal inflator pump and the air release valve are adopted, a worker can fix the device on one side of the highway guardrail through the clamping groove, then, the pedal inflator pump can be treaded, gas is injected into the vertical cylinder, the gas pushes the piston to move upwards, the top box can be pushed to move upwards, and rapid deployment and installation are completed; the highway noise enters the top box after being received by the horn mouth, the decibel meter detects the noise, when the device is folded, the device can be rapidly folded only by opening the air release valve and exhausting air in the vertical cylinder, the height of the folded device is reduced, carrying is convenient, and compared with a traditional height adjusting structure, the device is more convenient to adjust the height, and the practicability is high. The folding is very fast and convenient, and the use convenience is improved.

The utility model discloses an active type composite energy -conserving vertical sound type barrier, including composite screen body, the flexible photovoltaic board of laying in the outside surface of composite screen body, at least one sound intensity sensor, the impulse ultrasonic generator for generating and emitting ultrasonic wave of eliminating noise, power supply circuit and control unit. The utility model takes ultrasonic generator active mode and carries out the noise reduction, satisfies the requirement of sensitive area noise value, integrates the flexible photovoltaic board on the surface of composite screen body, utilizes solar energy and has realized the energy self -sufficiency of system, the composite screen body of upper portion inwardly inclined will most traffic noise reflect back road area, improves the noise reduction effect and can make flexible photovoltaic board maximum receive solar radiation, provides more electric energy, the intensity and frequency spectrum of two sound intensity sensor noise value, adjusts the emission angle and frequency of impulse ultrasonic generator and other working parameters, realizes more accurate, efficient directional noise elimination.

The invention provides a performance bottleneck diagnosis method and device, and belongs to the technical field of micro-services. According to the method, the key performance index reflecting the operation health state of the micro-service is utilized to evaluate the operation health state of the micro-service, and when the exception is found, the traffic mirroring strategy corresponding to the abnormal micro-service is determined. The traffic mirroring strategy is used for acquiring the mirroring traffic of the abnormal micro-service. According to the on-demand mirroring strategy, only when the performance bottleneck is detected, mirroring sampling is carried out on the flow of the abnormal micro-service causing the performance bottleneck, and compared with collection of full-amount logs or fixed-proportion logs, the sampling data size can be remarkably reduced, and therefore the storage cost and the calculation cost are reduced. And in the mode, mirror image sampling is only carried out on the traffic of the abnormal micro-service, so that normal traffic noise data can be reduced from the source, the noise influence is avoided, and the positioning efficiency and the positioning precision of the performance bottleneck root cause are improved.

The utility model discloses a sound absorption barrier of flower shape structure, including screen body, and the sound absorption component of uniform distribution on screen body, and the sound absorption component includes first noise reduction part and second noise reduction part, the outer peripheral surface of first noise reduction part is equipped with several consistent sharp corners, and is surrounded in first noise reduction part outside through a plurality of sharp corners, first noise reduction part and second noise reduction part are evenly distributed on the length direction of screen body, and second noise reduction part is located the below of first noise reduction part. Above all, through the screen body surface formation sound absorption component, and two noise reduction parts on sound absorption component can absorb traffic noise, specifically, utilize two noise reduction parts and the mutual cooperation of sharp corner, can reduce its overall energy to the multiple interference effect of alternating reflection and scattering of traffic noise on the screen body surface, so that the equipment can utilize self structure to complete the absorption and reduction of noise. Have based on this, the utility model is worth promoting and application.

The utility model discloses a polygonal structure interference type acoustic board which comprises a screen body, and a first sound absorption area and a second sound absorption area are arranged on the face, facing the sound source side, of the screen body. The first sound absorption area protrudes out of the outer wall face of the screen body, and the second sound absorption area is sunken towards the interior of the screen body. The cross sections of the first sound absorption areas and the cross sections of the second sound absorption areas are both polygonal, and the number of the first sound absorption areas and the number of the second sound absorption areas are both multiple. The first sound absorption areas are distributed on the screen body at equal intervals, and the second sound absorption areas are distributed below the first sound absorption areas at equal intervals. The polygonal concave-convex structure is formed on the surface of the screen body, so that the total energy of traffic noise is reduced through multiple interference effects of alternate reflection and scattering of the traffic noise on the surface of the screen body, and the equipment can absorb and reduce the noise by utilizing the structure of the equipment; according to the screen body, the concave-convex structure is used for replacing the situation that the existing sound absorption equipment needs to be filled with porous materials, and then the sound absorption function can be achieved.

This invention provides an adaptive active noise cancellation device based on bimodal perception, relating to the field of active noise cancellation technology. The device includes a main unit comprising: a microphone array module for acquiring ambient noise signals; an active noise cancellation processing module electrically connected to the microphone array module for real-time processing of the acquired noise signals to generate inverse sound wave signals; and a scene recognition module electrically connected to the microphone array module for real-time analysis of the audio signals acquired by the microphone array and identification of noise types, including at least traffic noise, mechanical noise, water flow noise, and snoring. This invention achieves targeted noise cancellation by using the scene recognition module to identify noise types in real-time and automatically matching the optimal noise cancellation strategy; and by using a position sensing module and various modular bases to achieve adaptive noise cancellation optimization for different placement positions.

The invention discloses an urban underground medium ultra-short time imaging method and system based on traffic noise tail waves, and relates to the technical field of geophysical exploration, and the method comprises the steps: obtaining traffic noise data, and carrying out the segmentation; performing mutual dry interference processing on each data segment to generate a virtual shot gather; according to the signal-to-noise ratio feature, the time-frequency energy distribution feature and the polarization feature of the virtual shot gather, a tail wave data segment is screened out from all the data segments; performing phase weighted stacking on the tail wave data segments; performing frequency dispersion imaging on the comprehensive data segment obtained by superposition to obtain a surface wave frequency dispersion curve; and performing inversion according to the surface wave dispersion curve to obtain an underground shear wave velocity structure image. The signal quality of the selected tail wave part is ensured through the signal-to-noise ratio, time frequency and polarization triple characteristics, high-precision and high-efficiency urban underground medium imaging is completed in an ultra-short time, the anti-interference capability is high, and the exploration cost is low.

The application discloses a sound barrier screen body, and relates to the technical field of traffic noise control facilities, which comprises an outer shell and at least one vertical lengthwise keel, the inside of the outer shell is filled with sound-absorbing material, the front side of the outer shell is a porous panel part, the rear side of the outer shell is a closed back plate part, a plurality of sound-absorbing holes are formed in the porous panel part, the porous panel part is used for facing the inside of a line, the vertical lengthwise keel is arranged in the inside of the outer shell in the vertical direction, the vertical lengthwise keel extends from the top of the outer shell to the bottom of the outer shell, the vertical lengthwise keel sequentially has a front connecting wing part, a main body part and a rear connecting wing part, the front connecting wing part corresponds to the porous panel part and is relatively fixed, and the rear connecting wing part corresponds to the closed back plate part and is relatively fixed; and the application can improve the wind pressure resistance.

The invention provides a real-time self-adaptive noise reduction Bluetooth headset, which is characterized in that environment noise and ear canal residual noise are respectively acquired by a dual-microphone array at an included angle of 45 degrees, four scenes of traffic noise, human voice, wind noise and a quiet environment are identified in real time by an embedded lightweight convolutional neural network (parameter quantity is less than or equal to 5KB), and matched noise reduction parameters are dynamically loaded; an anti-phase sound wave is generated in combination with a self-adaptive feedback controller, system delay is compressed to 0.08 ms level by using an LMS filter with an adjustable step length mu, and a sound wave anti-phase physical limit is broken through; the noise reduction depth (static 40dB / walking 25dB) is dynamically adjusted according to the motion state through the six-axis sensor, and noise reduction is stopped within 0.5 second when the barometer detects that the earphone is taken off; the binaural exchanges noise data based on BLE 5.0, and executes a hybrid noise reduction strategy in an asymmetric scene. According to the scheme, the noise suppression depth is improved by 40% (the subway environment reaches 38dB), and the high-frequency phase deviation is lt; and the PESQ score of the binaural voice definition is 4.8 / 5.0, the power consumption of a motion scene is reduced by 35%, and the method is suitable for acoustic equipment such as TWS earphones and the like.

The present application relates to the technical field of urban traffic noise control, in particular to a sound-absorbing and noise-reducing wave-shaped guardrail, which comprises a stand, a bracket, a fastener, a combined energy-dissipation turning system, a wave-shaped guardrail steel plate and a sound-absorbing plate. The wave-shaped guardrail steel plate comprises a screen body panel and a screen body back plate. In the present application, the screen body panel is made of a wave-shaped perforated galvanized steel plate, which is internally filled with hydrophobic sound-absorbing cotton, achieving multiple effects of sound absorption, noise reduction, environmental protection and durability. The combined energy-dissipation turning system can drive the vehicle to correct the driving direction when the vehicle hits, avoiding frontal impact and improving the impact protection performance. The guardrail has a simple structure and is easy to install and modify. It not only can effectively reduce road traffic noise, but also can provide better safety protection effect, and has a wide application prospect.

The application discloses a noise-reducing type concrete crash barrier for viaducts and a crash barrier assembly, which comprises a wall body, a sound-absorbing channel is arranged in the wall body, both ends of the sound-absorbing channel extend to the inner side of the wall body, the lower end of the sound-absorbing channel extends to a channel cover plate, the channel cover plate is fixed to the wall body and covers the lower end of the sound-absorbing channel, the upper end of the sound-absorbing channel extends to a sound-absorbing plate arranged along the wall body, the sound-absorbing plate is fixed to the inner side of the wall body and covers the upper end of the sound-absorbing channel, and a sound-absorbing coating is arranged on the inner surface of the sound-absorbing channel. The crash barrier has good noise-reducing effect and reduces the influence of viaduct traffic noise on the surrounding residents' life.

The invention relates to the technical field of urban traffic noise elimination construction, in particular to a sound barrier anti-collision wall positioning and trepanning device which comprises a connecting frame, and the side walls of the two ends of the connecting frame are slidably connected with a first clamping frame and a second clamping frame correspondingly. The two ends of the side walls, close to each other, of the first clamping frame and the second clamping frame are rotationally connected with second rolling wheels. Rolling wheels I are rotationally connected to the middle areas of the left and right ends of the bottom of the connecting frame; the rolling wheel I and the rolling wheel II on the connecting frame, the clamping frame I and the clamping frame II are respectively in sliding contact with the side walls and the top of the left end and the right end of the anti-collision wall, so that the trepanning equipment slides at the upper end of the anti-collision wall. A walking mechanism is composed of the connecting frame, the first clamping frame, the second clamping frame, the first rolling wheel and the second rolling wheel, a drilling machine fixing device is composed of a vertical sliding block, a parallel sliding rail, a parallel sliding block, a sliding rod and an electric drill mounting plate, the time for carrying drilling equipment and manually holding a drilling machine in the construction process is greatly shortened, accurate positioning of the drilling position can be achieved, and the drilling efficiency is improved. And the punching efficiency can be effectively improved.

The invention belongs to the technical field of traffic noise isolation, and particularly relates to a splicing structure and a sound barrier plate for traffic engineering.The upper end of an inserting column is fixedly connected to the lower end of a second sound insulation plate, the lower end of the inserting column is fixedly connected with the upper end of a connecting shaft, and the lower end of the connecting shaft is fixedly connected with a third cone; an inserting groove and a third cavity are formed in the top end of the interior of the second sound insulation plate, the inserting groove and the third cavity are connected in a penetrating mode, a third fixing plate is fixedly installed on the inner side wall of the third cavity, the third fixing plate is slidably connected with a first sliding rod in a sleeving mode, and one end of the first sliding rod is fixedly connected with a first sliding block; in the first energy absorption assembly, wind vibration generated by vehicle running enables a first attraction plate to move, and a second spring is compressed and deformed to absorb energy; in the second energy absorption assembly, a second sound absorption plate moves, and a third spring is compressed and deformed to absorb energy. Such a design reduces rigid collisions.

The utility model discloses a light energy-saving fiber cement board. The upper end of the first fiber cement board layer is provided with a flame-retardant layer, the upper end of the flame-retardant layer is provided with a waterproof layer, the upper end of the waterproof layer is provided with a first wear-resistant layer, the lower end of the first fiber cement board layer is provided with a sound insulation layer, the lower end of the sound insulation layer is provided with a second fiber cement board layer, and the lower end of the second fiber cement board layer is provided with a thermal insulation layer. A second wear-resistant layer is mounted at the lower end of the insulating layer. The bumps mounted at the upper end and the lower end of the sound insulation layer are matched with the grooves, so that the firmness of the fiber cement board is improved, the sound absorption cotton filled in the mounting holes is used for insulating sound, the influence of noise on indoor personnel is reduced, and when traffic municipal facilities such as expressways, elevated composite roads, urban light rail subways and the like are close to residential areas, the noise is reduced, and the safety is improved. The influence of traffic noise generated when vehicles pass on nearby residential areas is reduced, and particularly the situation that residents are difficult to fall asleep at night is avoided.

The invention provides a road sound insulation board based on a hierarchical pore structure and a preparation method of the road sound insulation board. The road sound insulation board comprises a sound insulation board main body, a multi-stage hole structure comprising a plurality of main hole channels and secondary communicating hole networks is formed in the sound insulation plate body, the secondary communicating hole networks are distributed around the peripheries of the main hole channels, and the main hole channels and the secondary communicating hole networks are communicated with each other. The internal pore structure of the sound insulation board main body is controllably designed, a main pore channel-secondary communicating pore network synergistically coupled multi-stage pore structure system is constructed, an acoustic impedance gradient regulation and control mechanism and an acoustic-induced vibration energy recovery unit are introduced, and on the premise that the overall thickness and the structural weight of the sound insulation board main body are not remarkably increased, the sound insulation board main body has a better sound insulation effect. Cooperative sound insulation of traffic noise of different frequency bands is achieved, and part of noise energy generated in the sound insulation process is converted into electric energy which is used for power supply or energy supplementation of low-power-consumption equipment along a road.

The application provides a highway side slope geological disaster early warning method and system, and belongs to the technical field of geological survey monitoring, and comprises the following steps: obtaining the side slope soil theoretical displacement of each key monitoring point at each monitoring moment according to the change condition of the effective displacement amount of the key monitoring point in a rain-free period and the side slope moisture penetration characteristic value; obtaining the structure damage degree of each key monitoring point at the current monitoring moment according to the difference condition between the side slope soil theoretical displacement of the key monitoring point at each monitoring moment and the effective displacement amount and the side slope moisture penetration characteristic value; and early warning of the geological disaster of the highway side slope based on the structure damage degree. The application effectively avoids the interference of the traffic noise of the highway and the wet swelling physical property of the side slope soil, and thus improves the accuracy and foresight of the side slope geological disaster early warning.